Handle float values

netbox/utilities/conversion.py

@@ -1,4 +1,4 @@
-from decimal import Decimal
+from decimal import Decimal, InvalidOperation
 
 from django.utils.translation import gettext as _
 
@@ -42,10 +42,11 @@ def to_meters(length, unit) -> Decimal:
     Convert the given length to meters, returning a Decimal value.
     """
     try:
+        length = Decimal(length)
+    except InvalidOperation:
+        raise TypeError(_("Invalid value '{length}' for length (must be a number)").format(length=length))
     if length < 0:
         raise ValueError(_("Length must be a positive number"))
-    except TypeError:
-        raise TypeError(_("Invalid value '{length}' for length (must be a number)").format(length=length))
 
     if unit == CableLengthUnitChoices.UNIT_KILOMETER:
         return round(Decimal(length * 1000), 4)

netbox/utilities/tests/test_conversions.py

@@ -28,8 +28,8 @@ class ConversionsTest(TestCase):
 
     def test_to_meters(self):
         self.assertEqual(
-            to_meters(1, CableLengthUnitChoices.UNIT_KILOMETER),
-            Decimal('1000')
+            to_meters(1.5, CableLengthUnitChoices.UNIT_KILOMETER),
+            Decimal('1500')
         )
         self.assertEqual(
             to_meters(1, CableLengthUnitChoices.UNIT_METER),